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pypict Test Case Generator

作者 omkamal · omkamal/pypict-claude-skill

N-wise (pairwise) test case generation with the pypict library.

Combinatorial testing is one of the highest-ROI test techniques you're not using. This skill teaches Claude to model your inputs as parameter sets and generate pairwise (or N-wise) test cases via pypict — getting strong coverage with minimal cases.

为什么要用

核心特性

实时演示

实际使用效果

pypict-claude-skill.replay ▶ 就绪
0/0

安装

作者仓库 · Claude Skills 官方文档

使用场景

实战用法: pypict Test Case Generator

Cover a feature with combinatorial inputs without writing 64 tests

👤 QA + devs writing integration tests ⏱ ~15 min intermediate

何时使用: Feature has 4+ enum-ish parameters and exhaustive testing would explode.

前置条件
  • Server/skill installed and authenticated — See repo README
步骤
  1. Model
    Use pypict skill: model checkout with payment_method=[card, paypal, applepay], shipping=[standard, express, intl], discount=[none, code, member], currency=[USD, EUR].✓ 已复制
    → Pict model + ~12 pairwise cases
  2. Generate tests
    Emit pytest tests from those cases against checkout().✓ 已复制
    → pytest file with parametrize

结果: Real combinatorial coverage with ~12 cases instead of 81.

注意事项
  • Pairwise misses higher-order bugs (3-way interactions). For safety-critical paths, use 3-wise. — Pairwise misses higher-order bugs (3-way interactions). For safety-critical paths, use 3-wise.

成本与限制

运行它的成本

API 配额
See provider docs for rate limits
每次调用 Token 数
Varies by tool
费用
See repo README for pricing details
提示
Cache tool results and avoid repeated identical calls.

安全

权限、密钥、影响范围

凭据存储: Use environment variables; never commit secrets
数据出站: Tool calls go to the provider's API as documented

故障排查

常见错误与修复

pict binary not found

Install Microsoft's pict tool (or pypict bundles it). See pypict README.

验证: pypict.exec_pict('test')
constraints rejected

pict constraint syntax is strict: IF [A] = "x" THEN [B] <> "y";. Use the skill's validator.

验证: Run validator first

替代方案

pypict Test Case Generator 对比其他方案

替代方案何时用它替代权衡
Plain parametrizeFew parametersNo combinatorial benefit

更多

资源

📖 阅读 GitHub 上的官方 README

🐙 查看未解决的 issue

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